Valve-controlling mechanism



March 22, 1927. 1,621,870

R. J. BUE HL ER I VALVE CONTROLLING MECHANISM Filed April 5, 1924 INVENTOR.

Earzda/ fflueilar.

ATTORNEY.

Patented Mar. 22, 1927.

NFFEB? stares RAHDQLHHJ J7- BU HLZEBa E' QUTlL'B ND, INDIANA- VALVETCONTBOIQLINQ.MECHANISM! rplic t en e vr l The invention relates to valve controlling mechanism; in connection with oil burners and particularly of'the typewherein a gas supply pipe is provided, and'an oilsupply pipe, both ofwhich pipes are provided with valves, and has for its object to provide controllin mechanism for general use for instance for said valves whereby the gas supply valve; willbe moved'to fullilopen posi 1011 before the oil supply valve is opened to maximum position, thereby allowing gas. to reach the burner befQlfe the oil, for preheating the burnerx The mechanism also forms means whereby when the oilsupply valve is at its. maximum open position the gas supply valvewi'llibe closed, thereby cutting otf'the flow of gasto the. burner for preheating purposes,

A. further, object: is to provide the valves with. operating I levers, which levers are linked together, .wl'iereby they willsimul'taneously move, and a-lconnection, between said levers and a thermostatically controlled motorca-rriedarm,- whichmotor on the operation thereof moves substantially one hundred and eighty degrees for constantly supplying oil and gas to the burneras needed.

A further object is to provide a dash pot in connection with said levers whereby the speed of operation thereof may be controlled, and weight means carried by one of said levers for moving said levers during a valve opening operation.

With the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawing, described and claim-ed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawing Figure 1 is a side elevation of the valve controlling mechanism.

Figure 2 is a front elevation of the valve controlling mechanism.

Referring to the drawing, the numeral 1 designates a. tl'iermostatically controlled motor of the type in common use wherein the rotative arm 2 makes a turn of about one hundred and eighty degrees upon each operation thereof. Connected to the arm 2 at 3 is a flexible connection 4-, the lower end of which is connected at 5 to the gas valve furnace or the like.

- downward 1924:; Serial No. 704,536.

lever 6, which lever is connected to-thephig valve 7 which is rotatably mounted in I the valve casing 8, and through which valve casing gas passes through conventional form ofpipe line in--tl=1e directionof the a-rrow Disposed adjacentthe plug valve 7 is adiaphragm valve 9 whichcooperatcs with a valve seat 10 for controlling the flow of" oil from the oil supply pipe- 11 to the discharge port-12 of' tl'revalve casing 13, and-through which port, the oil may pass through apipe to a burnerdisposed-in a The: valve 9-is ca- 5 by a diaphragm 141, and moves tl'ie-rewith, however the diaphragm 1 1 is no-rmally forced away from the valve seat 10 by the coiled spring 15 which unseatsthevalve-9.

By reason ofthe diaphragm 1d the oil will pass through the chamber 16'of the casing 13 without coming into Contact with the diaphragm. operating screw 17; consequently clogging of-said screw is. obviated; Secured to. the outer end ofthe screw 17 is an operating lever 18-, which lever, when moved downwardly in thedi-rection-ofthe arrow 6 slowly allows the diaphragm 141 to be forced away from the valve seat 10, thereby slowly unseating the valve 9, and allowing a flow of oil through the chamber 16, and discharge port 12 to a furnace burner. The levers 6 and 18 are connected together. by means of a link 19 whereby said levers will simultaneously move and preferably in parallel relation, as shown in dotted lines in Figure 2 for controlling the valves when the motor arm 2 makes a half revolution. W hen the motor arm 2 starts to rotate the weight 20, carried by the arm 18 will move downwardly, and it will be noted that the port 21 in the plug valve 7 will rapidly open to its maximum position, thereby allowing a full flow of gas through the valve casing 8 in the direction of the arrow (6 before there has been any material unseating of the diaphragm carried valve 9; consequently the full flow of gas may be utilized for rapidly heating a burner before a full flow of oil reaches the burner; consequently the oil will be quickly gasified when it comes in contact with the burner. As the valve controlled levers 6 and 18 continue their movement, the flow of oil through the valve seat 10 is gradually in creased, and the plug valve 7 is moved to closed position, thereby cutting off the supply of gas before the maximum. flow of oil takes place. When the motor is again thermostatically operated, the parts are moved to initial position as shown in Figure 2. The above cycles of operation continue from time to time for automatically controlling the burner.

The periods of time necessary for each operation may be controlled by means of the dash pot 22, in which dash pot the piston 23 is mounted, and is provided with a piston rod 24 connected by means of the crank arm 25 to the lever 18. Piston 23 preferably acts against a fluid, for instance oil, and during its movement in opposite direc tions forces the oil through the by-pass 26 to opposite sides of the piston 23. Therefore it will be seen that there is a retarded action of the arms 6 and 18, and the period of time of operation may be varied by means of the screw valve 27. Although the valve control mechanism has been described in connection with a gas burner, it is obvious the valve controlling means may be used in connectipn with adjacent valves for controlling fiow of liquid or gas and the same may have many applications.

From the above it will be seen that a valve controlling mechanism is provided whereby adjacent valves may be moved simultaneously in a manner whereby one of said valves will be rapidly opened to maximum position during the slow opening of the other valve, and the first mentioned valve will be moved to closed position by the is claimed as new and useful is 1. A valve combination comprising a. rotatable plug valve having a port transversely therethrough, a rotatable threaded valve stem axially movable, a valve carried by said valve stem, said valve cooperating with a valve seat and means connecting said plug valve and threaded valve stem, said.

last named means and threaded valve stem forming means whereby when the plug valve is in full open position the valve carried by the threaded valve stem will unseat.

2. A valve combination comprising a rotatable plug valve having a transverse port therein, a threaded valve stem threaded 1n a caslng, a valve earned by the threaded valve stem and cooperating with a seat and connecting means between said plug valve and threaded valve stem forming means whereby the plug valve will be moved to open position, the threaded valve slowly unseated and the plug valve closed when the threaded valve is fully unseated.

In testimony whereof I atfix my signature.

RANDOLPH J. BUEHLER. 

